SIERRA 18-5432 Ignition Distributor Finger

Compatible Engines

When servicing marine propulsion units, using original components is key to ensuring reliability and safety on the water. The SIERRA 18-5432 ignition distributor finger is a critical structural element that plays a vital role in the spark distribution system. This part is specifically designed for MERCRUISER GM V-6 engines equipped with HEI Thunderbolt IV and V ignition systems. Thanks to its precise manufacturing, the SIERRA product ensures perfect mechanical fitment, which translates to stable engine operation and prevents ignition-related issues.

Please remember that compatibility should always be verified by comparing the catalog number 18-5432 with your engine's specifications. If you have any doubts about selecting the correct part for your specific boat model, contact our store support team to choose the appropriate sub-assembly.

Installation and Operation

Replacing the distributor finger is a task that requires precision. Before starting work, always disconnect the battery to avoid dangerous short circuits. During disassembly, pay attention to the condition of seals and other components inside the distributor, as wear on one element may indicate the need to inspect the entire ignition system. Installing the new SIERRA finger should be done without excessive force to avoid damaging the mechanism. Regular inspection of this component prevents sudden breakdowns during cruising.

• Original SIERRA manufacturer quality ensures durability and compliance with standards.
• Specialized application in HEI Thunderbolt IV and V systems for GM V-6 engines.
• Precise dimensions guarantee hassle-free installation without modifications.
• Compatibility verified by OE number 18-5432 for complete safety.